@misc{indiciae9825f100be41,
  title = {Preface.},
  author = {LA Houghton and PJ Whorwell},
  year = {1999},
  doi = {10.1053/bega.1999.0032},
  url = {https://pubmed.ncbi.nlm.nih.gov/11032684/},
  note = {Source identifier: 11032684}
}